时间不能同步
[root@ ~]# dateSun May 20 15:06:47 CST 2012[root@ ~]# cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime[root@ ~]# ntpdate us.pool.ntp.org20 May 15:06:57 ntpdate[2723]: step time server 173.244.211.10 offset -23753.383441 sec